Active equalization circuit of lithium ion storage battery monomer for carrying

Abstract

The invention relates to an active equalization circuit of a lithium ion storage battery monomer for carrying, and belongs to the field of ground power supplies for carrying. The circuit comprises ground charging and discharging equipment, n monomer equalization modules and n battery monomers; the n battery monomers are sequentially connected in series in a positive-negative manner to form a series circuit; the positive end and the negative end of the series circuit are communicated with the ground charging and discharging equipment; the n single balancing modules are arranged and mounted on an external connecting bottom plate; the monomer equalization modules and the battery monomers are in one-to-one correspondence to form a parallel circuit; and n parallel circuits are formed. According to the invention, the problem of monomer active equalization in the charging process of multiple strings of lithium ion monomers is solved, the characteristics of frequent ground charging and discharging and short flight task work period of the lithium ion storage battery for carrying are met, and the cycle service life of the lithium ion storage battery for carrying and the flight reliability after launching are ensured.

Description

technical field [0001] The invention belongs to the field of ground power supplies for transportation, and relates to an active balancing circuit for lithium-ion battery cells for transportation. Background technique [0002] As a new energy storage medium in the field of launch vehicles, lithium-ion batteries have the characteristics of high terminal voltage, large specific energy, and long life compared with traditional nickel-cadmium batteries and nickel-hydrogen batteries. In recent years, the application of lithium batteries in the field of transportation has been promoted rapidly, and the corresponding ground equipment urgently needs to be followed up. In order to meet the voltage and energy requirements of the launch vehicle, lithium batteries are generally used in series and parallel. Lithium batteries for transportation have the characteristics of frequent charging and discharging on the ground and short duty cycle. However, due to the imperfect manufacturing proce...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, and to propose an active equalization circuit for lithium-ion battery cells for transportation, which solves the problem of active equalization of cells in the charging process of multiple strings of lithium-ion cells, and is suitable for transportation applications. Lithium-ion batteries are frequently charged and discharged on the ground, and the mission cycle is short, which ensures the cycle life of the lithium-ion batteries used for transportation and flight reliability after launch.

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